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Which of the following is also called as forward hot extrusion?

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in Casting-Forming-Welding II by (119k points)
Which of the following is also called as forward hot extrusion?

(a) Direct extrusion

(b) Indirect extrusion

(c) Impact extrusion

(d) Hydrostatic extrusion

The question was asked during an online exam.

My query is from Extrusion and Wire Drawing topic in chapter Forming Process of Casting-Forming-Welding II

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The correct choice is (a) Direct extrusion

To elaborate: Direct extrusion is also called as forward hot extrusion. This method is most widely used and maximum production is done by this method in extrusion.

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